Adult BIRKENSTOCK Boston EVA Clogs 3095-127133 The Adult BIRKENSTOCK Boston EVA Clogs can take you from the beach to the gym to a night out. This iconic shoe, now in EVA, is perfect for all seasons and occasions, providing comfort and style in one lightweight package. The EVA material is waterproof and lightweight, making it ideal for summer days spent by the water. With BIRKENSTOCK Boston EVA Clogs, you'll be prepared for wherever the day takes you.